The birth and death of organic molecules in protoplanetary disks

Details The birth and death of organic molecules in protoplanetary disks The birth and death of organic molecules in protoplanetary disks

2008-05-15

arxiv.org/abs/0805.2341v1

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures, to be published in the IAU 251 proceedings book

Scientific paper

10.1017/S1743921308021261

The most intriguing question related to the chemical evolution of protoplanetary disks is the genesis of pre-biotic organic molecules in the planet-forming zone. In this contribution we briefly review current observational knowledge of physical structure and chemical composition of disks and discuss whether organic molecules can be present in large amounts at the verge of planet formation. We predict that some molecules, including CO-bearing species such as H$_2$CO, can be underabundant in inner regions of accreting protoplanetary disks around low-mass stars due to the high-energy stellar radiation and chemical processing on dust grain surfaces. These theoretical predictions are further compared with high-resolution observational data and the limitations of current models are discussed.

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